Answer :
Answer: 8 senior tickets, 12 normal tickets.
Step-by-step explanation:
You can find the answer to this by creating two equations: one for the amount of tickets sold and the other for how much money was collected.
I will represent the variables as A for normal tickets and C for senior tickets.
[tex]A + C = 20\\12A + 6C = 192[/tex]
To solve this, you can solve for one of the variables. I will solve for A in the first equation:
[tex]A = 20-C\\12A + 6C = 192[/tex]
Then, you can substitute the new value of A in the second equation:
[tex]12(20-C) + 6C = 192\\240-12C+6C=192\\240-6C=192\\-6C=-48\\C=8[/tex]
Knowing that there were 8 senior tickets sold and 20 tickets sold total, we know that there were 12 normal tickets sold.